While I'm not really a fan of Dawkins' militant approach (I say believe whatever you want to, as long as you don't infringe on the rights of others), what he does, in a sense, allows others to have a voice. So it is important.
He also has the right to say what he likes, especially seeing as he has likely put effort into researching it.
I feel Nessy, that you were being a little judgemental above, and in a sense, was blinded by your own biases against the EDL. I don't know much about them, apart from them them being an extreme right political party. Not my cup of tea.
You say that Dawkins shouldn't give them more ammunition. The fact is, whether he does or not is irrelevant. They will continue to cherry pick and twist facts, regardless of where they get them from. That's what they do, and their base is unlikely to care where their 'facts' come from.
A lot of what SG,P said was true, though maybe a little generalised. To say he was speaking from the EDL handbook is a bit disingenuous. Doing only shuts down discussion, which is exactly what fundamentalist groups of all stripes want.